Add a Follow Button to Your Facebook Profile

Source: http://www.labnol.org/internet/facebook-subscribe-button/20073/

Let People Subscribe to your Facebook Profile

Facebook has an option to profile pages that would let people “subscribe” to your profile just like the way people follow you on Twitter. Whenever you post an update on Facebook with the privacy set as “public,” it will appear in the news stream of your subscribers or followers.

If you would like to add the Follow button to your own Facebook profile, choose Settings and click on the Followers option the left sidebar. Now choose “Everyone” under the “Who can follow me” setting (you can only do this from your Facebook on your desktop, not the mobile app).
https://www.facebook.com/settings?tab=followers&view

To confirm, go your Facebook profile page, hit the “View As” button and then click the “public” link to see what updates in your profile are public. You can have unlimited number of subscribers followers to your profile but you can subscribe to a maximum of 5,000 profiles.
In the same Followers tab, you can also choose who can comment on your public Facebook posts.

You can also add a follow button to your blog/website using this html widget:
<iframe src="//www.facebook.com/plugins/follow?href=https%3A%2F%2Fwww.facebook.com%2Fmkgilher&amp;layout=standard&amp;show_faces=true&amp;colorscheme=light&amp;width=450&amp;height=80" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:450px; height:80px;" allowTransparency="true"></iframe>

(Note: you can change the height and width in the code above to fit your sidebar. Mine was 200width by 40 height.)

Follow my M.K. Gilher Profile Page here: https://www.facebook.com/mkgilher